Cisco Catalyst SD-WAN Policies Configuration Guide, Cisco IOS XE Catalyst SD-WAN Release 17.x - Packet Duplication

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/policies/ios-xe-17/policies-book-xe/packet-duplication.html

Published

2025-12-19

Updated

unknown

Accessed

2026-09-24

HTTP status

200

License

Cisco documentation; all rights reserved; no-redistribution; short excerpts and locators only

Source notes citing this source

• SD-WAN packet duplication sends copies of selected traffic over alternate tunnels to mitigate loss. The receiving device forwards one copy and discards the duplicates. in context
• Packet duplication arrived in IOS XE SD-WAN 16.12.1b. In 17.15.1a it gained large packets (via underlay fragmentation) and IPv6 traffic types. in context
• Packet duplication is not supported on every IOS XE Catalyst SD-WAN edge device, cannot be combined with local or remote TLOC in policies, and does not interoperate between IOS XE 16.x and 17.x when combined with FEC or TCP optimisation. in context

Cite this source record

APA

WarmTransfer. (2025, December 19). Cisco Catalyst SD-WAN Policies Configuration Guide, Cisco IOS XE Catalyst SD-WAN Release 17.x - Packet Duplication. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-sdwan-pol17-packet-duplication

BibTeX

@misc{warmtransfer-cisco-sdwan-pol17-packet-duplication,
  title  = {Cisco Catalyst SD-WAN Policies Configuration Guide, Cisco IOS XE Catalyst SD-WAN Release 17.x - Packet Duplication},
  author = {{WarmTransfer}},
  year   = {2025},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-sdwan-pol17-packet-duplication},
  note   = {Cisco Systems, accessed 2026-09-24}
}